Pumping attachment for automobiles.



0. M. BERGSTBOM. PUMPING ATTACHMENT FOR AUTOMOBILES.

v YrLcAToN rum uns, 190s. A 1,058,141 f. v Patented Apr. 8, 1913, v 'A 2 SHEETS-SHEET 1.

O. M. BERGSTROM. PUMPING ATTACHMENT EUR AUTOMOMLBS.

APPLICATION FILED MAY 3, 1909.

Paien Apr. 8, 1913.

2 SHEBTS*-SHEET 2.

essais er. Bussereau, or inmune-roars, zamniisorn.

' Pmi/irrite ATTACHMENT Fon AuroraoBILEs'.

Specification o Letters Paten-t. Application filed 3, i909. Serial No. 493,596.

To all 'whom i may conce-m.'

` hereb declare, the followinN to' Be it known that I, @scan M. Ennosrscar, a citizencf the United States, residing Minneapolis, 1n the county of Hennepin and State of Minnesota, -have' invented .certa-in new and useful lm rorelnents in Pumiini Attachments for Automobiles;f .andv .l do he aull, clear, and exact description of the-invention, such as vwill enable others skilled in the er@ to which it .appertains tomake and '-usezthe same.l

My invention Ghas :for itsiz'oloject tol prof.'

vide a simple," convenient and highlyr eflil' cient air pump adapted to be applied to and operated frein one of an automobile.

To the above ends,t.l1e

of the novel devices and combinations of devices'hereinater described and defined in4 the claims. In the accolnpanymg. drawings fwhich i illustrate the invention, like characters indica te lilgesgspsrts A; throughout' the' several views.

Referring to the" drawings: Figure' l isa diagrammatic fragmentary View, showing my improved pumpapplied to an automobile; 'and Fig. 2 tion, and partly line m2 of Fig.

in Vertical section on the l, showing the pump and 'Wheelhub on a larger scale than in Fig. l.

Gf the parte of the automobile, it is, for

the 'purposes of this case, only desirable toparticularly note the running board l and -onc of the rear or traction Wheels 2, which latter is provided on its hub 3 with the customary hub cap 4. A

My improved pump as preferably constructed` comprises two axially alined cyl'-A working one in inders :3 aud-two pistons 6,

connected by a cachot' said cylinders. and laterally offset tie bar 7 cast, integralztherewith. The two cylinders 5, at their inner ends, are cast integral wit-l1 the sections 8 of a crank shaft casing, which latter is provided with joint. flanges 9 ri'idly vbut detachably conneted oy suitaile bolts or screws. The crank shaft casing 8, at its inner side, is formed with a laterally offset. internally.concaved flange l0, which constitutes an outer hall runway formed part in ""At'their outer ends, the cylinders 5 are provided with rigidly secured heads 1 1 proinvention consists,

1s a vlewpart-ly in eleva-v of the traction' Wheels A .vided with a discharge nipple 14 to W is apparsi Thesis the 'the divided crank shaft l vided with yair chambers areicoinnested oy an air discharge pipe 13'. tiie intermediate `portion, the air `pipe 13 is ros. an `air delivery h ose 15 v chambers l2 are normally closed by I wardly opening spring closed -checkvalyes 1.632% 'the stems Patented pr,

.ofl which, as shown,are-

Inounte'drin plugs l? seated in the 'oltelfpolh1 5'5' tions of the'cylnder headsl 11. TheV cylxi.

ders". 5, near their inner extremitiesf'are shownjas pro-vided with air inlet ports 1,8;A

'Gneo the pistons is one end of .a crank rod 19, which 'rod at its other end, is pivoted to a Wrist pin 2001 a.

crank disk or ring 2l. This crank disk'21 is provided with a peripheral groove .which constitutes an inner runway. for bearin' balls 22 arranged to Wor'k in the same, an

in the internal lgroove of the flange 10 of' casrg. This crank disk 21 is formed 'with .a laterally projecting semi-cylindrical clamping fla-nge 23 thatl is adapted to fit the exterior surface of hub cap 4. A U-shaped clam ing bolt or yoke '24 is provided with reduces threaded ends that work through lugs of theA clamping flange 23, and are provided with nuts which when tightenei-clemp 'the yoke 24 and flan e 23 rigidly onto the heb cap 1, and there y rigidly but detachably secure the crank disk 21 to the Wheel hub 3l As is evident, Aif the Wheel 2 be rotated while the pump is heldagainst rotation, said directly piyotedto' pump will be thrownv into action' and airv will be pumped fronrthe cylindersutward through the pipe 13 and tube 15, Whichilts: ter at its free end, will, in practice, be'prof vided with a suitable coupling, not shown,

for .connection to the nipples of the lineumatic tires. supported directly by the crank disk 21and through the latter by the Wheel hub 3. 4As e simple and convenient means for anchoring the pump cylinders against rotation, aQ chain 26 is attached at one end to one of the cylinder heads. and at its other end to the running board l' or other convenient part of the machinev When the pump is to be used, thewheel to which it is applied, and from which it is driven` must he raised from the floor or ground, while the opposite driving Wheel should be left ori-the ground or door to 1afford the'proper hase of reaction for driving the raised wheel by means of the auto- The entire p um'p, 1s, ofcourse,

i nmbile engine en@ ix'zmsmi seid cylinder :incl means .imi l `.ll'nction wheels, the tiie elf any one ef ef my impievecl pump appli' limited, an euemobile V'tire ine-y of baril Work .lo charge the ,therein3 a @milk di piston und jprrwicief willi memi ion izleeliauism.

vthe pump,'provide, of course, that lilietube 'l5 is ei' suiieient length. lille iiies o both traction wheels ui'e to be Clem-ged, the pump must be first applied to oiieheieO and then to che other.'

ln practice have found. ilizn. by The i, es. lili-1sy 3e charged iii e, vei'y few seconds, wlieeas 'willi :le dineiy hand opemefl pump, il, will :fre queiily require :is miieii as Twenty mimies seme lire te llie same Io1: even a less jpiiessuie1 'lie iwo 'cylinders and pistone, of eeuise, ziet alternately or undef reverse piston movements to compress ilie. air, se that a, genetically continuous pumping eetien is ijnfodueed 'when 'the pump .is in action. Foi" this ree son, the duplex aleineielj-,f meting piling is much more: llieienl'y time. a single' Cylinder and piston pump. ievei'lheless, die use of e single eyliiidei and pisioii pump, in lieu f the duplex pump, wield oe williin the scope of this imYenlion.

Wiet l claim is: u l. A 'iieelierg'ingg pump for mobiles comprising s cylinder, e, pi .en working zilively eeii'ieeed 'i0 ed le seid. oi P: idly but deieelieiily animee ig' 'Ille seme directly to vlie imi) ef a lyseliei. Wheel, the seid crank disk thereby efoiding s. support fili* w'seeing'seid seicl cylinder, opei'nlivi cylinder against relation, elw pei-is constituting e seleonleiuecl e slm@ ture.

v2. A tii'e charging pump ier automobiles,

le one of the4 Lese-Lie comprising a p11-ii' of cylinders having crank shaft sections rigidly but delaoliably connected with each other, the seid crank sli-e151; casing having e bell runway, e crank disl-z having e bell runway, bearing bellsin the rauwe of 4rsziiel erenk easing and seid crank disiie suppoi-iing seid easing and cylinders :frein said Crank disk, mit pei'mit heir l'eieieii elllie letter, rigidly connected piste-i woyliing iii seid eyliiiders, u, Creek eomieeiing Seid pisions to ssifl Crank disk, valved mi' discharge passages extending from saiil eyliders, :meses for figirily but cleischebly eenneeting seid crank flisi; to the hul) of a traction Wheel, and means fof anchoring seid cylinders against rotation willi the' seidl erenlq disk,

The combination Willi e traction wheel of en automobile, oie ci'enk diskheving e groe'vefi periphery, and e segmental hub clamping flange, a nut equipped i-'bolb coopemting with seid clamping flange to :eigidly out {leleeliebly secure seid eianl disk fo the hub of seid Wheel, e peil of elnefl Cylinders having Crank shaft cese seclions deliwliably but rigidly eonneeed to each other, sind 'ploviclerl with au internal ball 'imwey, bearing bells interpoeeflbetween said intemel bell iunway :md lie pei'iphersl 'groeve of said crank disk, sei cylinders having air intake poets and veli/'ed air discharge poets, e peil: of rigidly con nested pistons werking one in each cylinder, und @muli-red connecting' seid pistons to ssii @milk disk, V

in lestmeiiy whereof lfiiii my signetui'e in presence oi' me Witnesses,

@SCAR M. BERGSRUM.

lllieesses mes J. SwsNsoN,

HARRY D. ELLGORE. 

